MESON Chess Problem Database

Problem Display
PID: 275392 (4R3/3Kn2r/3P2p1/6Br/4kpP1/1B3p1N/1QP2R2/1b1N2b1 w - - 0 1)

Doukhan, Gerard

Variantim, 2023

4R3/3Kn2r/3P2p1/6Br/4kpP1/1B3p1N/1QP2R2/1b1N2b1

#2

11 + 9

SOLUTION

  • SOUND
  • Sets
    • 1...Rxg5
      • 2.Sxg5#
    • 1...Rh6
      • 2.Rxe7#
    • 1...Rh8
      • 2.Rxe7#
    • 1...Bxf2
      • 2.Shxf2#
  • Tries
    • 1.Bf6?
      • threat
        • 2.Qd4#
      • 1...Bxf2
        • 2.Shxf2#
      • 1...Re5
        • 2.Qxe5#
      • 1...Rd5!
    • 1.Rd2?
      • threat
        • 2.Bd5#
      • 1...Rxg5
        • 2.Sxg5#
      • 1...Bd4
        • 2.Qxd4#
      • 1...Ba2!
    • 1.Re2+?
      • 1...Be3
        • 2.Sdf2#
        • 2.Shf2#
      • 1...fxe2!
  • Keys
    • 1.Ke6!
      • threat
        • 2.Qe5#
      • 1...Rxg5
        • 2.Sxg5#
      • 1...Bxc2
        • 2.Bxc2#
      • 1...Sc6
        • 2.Bd5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 3
  • Sets
    • R(f);XB(H)::S(F),XR(f)
    • R(i);N_GUARD::R(K),XS(h)
    • B(b);XR(D)::S(F),XB(b)
  • Tries
    • Try
      • B(H);
      • Threat
        • QAR1(B)
      • Vars
        • B(b);XR(D)::S(F),XB(b)
        • R(f);N_GUARD,N_SPINS(h)::QAR1(B),XR(f)
      • Refutation
        • R(f);P_PINP(I)
    • Try
      • R(D);
      • Threat
        • B(E)
      • Vars
        • R(f);XB(H)::S(F),XR(f)
        • B(b);N_GUARD::QAR1(B),XB(b)
      • Refutation
        • B(a);
    • Try
      • R(D);CHECK
      • Refutation
        • P(c);XR(D)
  • Actual
    • K(J);N_PINS(h),S_FLIGHT
    • Threat
      • QAR1(B)
    • Vars
      • R(f);XB(H)::S(F),XR(f)
      • B(a);OGATE,XP(C)::B(E),XB(a)
      • S(h);N_GUARD::B(E)
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